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  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->

<script type="text/x-red" data-template-name="switch">
    <div class="form-row">
        <label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
        <input type="text" id="node-input-name" data-i18n="[placeholder]common.label.name">
    </div>
    <div class="form-row">
        <label data-i18n="switch.label.property"></label>
        <input type="text" id="node-input-property" style="width: 70%"/>
        <input type="hidden" id="node-input-outputs"/>
    </div>
    <div class="form-row node-input-rule-container-row">
        <ol id="node-input-rule-container"></ol>
    </div>
    <div class="form-row">
        <select id="node-input-checkall" style="width:100%; margin-right:5px;">
            <option value="true" data-i18n="switch.checkall"></option>
            <option value="false" data-i18n="switch.stopfirst"></option>
        </select>
    </div>
</script>

<script type="text/x-red" data-help-name="switch">
    <p>Route messages based on their property values.</p>
    <h3>Details</h3>
    <p>When a message arrives, the node will evaluate each of the defined rules
    and forward the message to the corresponding outputs of any matching rules.</p>
    <p>Optionally, the node can be set to stop evaluating rules once it finds one
    that matches.</p>
    <p>The rules can be evaluated against an individual message property, a flow or global
    context property or the result of a JSONata expression.</p>
</script>

<script type="text/javascript">
(function() {
    var operators = [
        {v:"eq",t:"=="},
        {v:"neq",t:"!="},
        {v:"lt",t:"<"},
        {v:"lte",t:"<="},
        {v:"gt",t:">"},
        {v:"gte",t:">="},
        {v:"btwn",t:"switch.rules.btwn"},
        {v:"cont",t:"switch.rules.cont"},
        {v:"regex",t:"switch.rules.regex"},
        {v:"true",t:"switch.rules.true"},
        {v:"false",t:"switch.rules.false"},
        {v:"null",t:"switch.rules.null"},
        {v:"nnull",t:"switch.rules.nnull"},
        {v:"else",t:"switch.rules.else"}
    ];

    function clipValueLength(v) {
        if (v.length > 15) {
            return v.substring(0,15)+"...";
        }
        return v;
    }
    function getValueLabel(t,v) {
        if (t === 'str') {
            return '"'+clipValueLength(v)+'"';
        } else if (t === 'msg' || t==='flow' || t==='global') {
            return t+"."+clipValueLength(v);
        }
        return clipValueLength(v);
    }
    RED.nodes.registerType('switch', {
        color: "#E2D96E",
        category: 'function',
        defaults: {
            name: {value:""},
            property: {value:"payload", required:true, validate: RED.validators.typedInput("propertyType")},
            propertyType: { value:"msg" },
            rules: {value:[{t:"eq", v:"", vt:"str"}]},
            checkall: {value:"true", required:true},
            outputs: {value:1}
        },
        inputs: 1,
        outputs: 1,
        outputLabels: function(index) {
            var rule = this.rules[index];
            var label = "";
            if (rule) {
                for (var i=0;i<operators.length;i++) {
                    if (operators[i].v === rule.t) {
                        label = /^switch/.test(operators[i].t)?this._(operators[i].t):operators[i].t;
                        break;
                    }
                }
                if (rule.t === 'btwn') {
                    label += " "+getValueLabel(rule.vt,rule.v)+" & "+getValueLabel(rule.v2t,rule.v2);
                } else if (rule.t !== 'true' && rule.t !== 'false' && rule.t !== 'null' && rule.t !== 'nnull' && rule.t !== 'else' ) {
                    label += " "+getValueLabel(rule.vt,rule.v);
                }
                return label;
            }
        },
        icon: "switch.png",
        label: function() {
            return this.name||"switch";
        },
        oneditprepare: function() {
            var node = this;
            var previousValueType = {value:"prev",label:this._("inject.previous"),hasValue:false};

            $("#node-input-property").typedInput({default:this.propertyType||'msg',types:['msg','flow','global','jsonata']});
            var outputCount = $("#node-input-outputs").val("{}");

            var andLabel = this._("switch.and");
            var caseLabel = this._("switch.ignorecase");

            function resizeRule(rule) {
                var newWidth = rule.width();
                var selectField = rule.find("select");
                var type = selectField.val()||"";
                var valueField = rule.find(".node-input-rule-value");
                var btwnField1 = rule.find(".node-input-rule-btwn-value");
                var btwnField2 = rule.find(".node-input-rule-btwn-value2");
                var selectWidth;
                if (type.length < 4) {
                    selectWidth = 60;
                } else if (type === "regex") {
                    selectWidth = 147;
                } else {
                    selectWidth = 120;
                }
                selectField.width(selectWidth);
                if (type === "btwn") {
                    btwnField1.typedInput("width",(newWidth-selectWidth-70));
                    btwnField2.typedInput("width",(newWidth-selectWidth-70));
                } else {
                    if (type === "true" || type === "false" || type === "null" || type === "nnull" || type === "else") {
                        // valueField.hide();
                    } else {
                        valueField.typedInput("width",(newWidth-selectWidth-70));
                    }
                }
            }

            $("#node-input-rule-container").css('min-height','250px').css('min-width','450px').editableList({
                addItem: function(container,i,opt) {
                    if (!opt.hasOwnProperty('r')) {
                        opt.r = {};
                    }
                    var rule = opt.r;
                    if (!rule.hasOwnProperty('t')) {
                        rule.t = 'eq';
                    }
                    if (!opt.hasOwnProperty('i')) {
                        opt._i = Math.floor((0x99999-0x10000)*Math.random()).toString(16);
                    }
                    var row = $('<div/>').appendTo(container);
                    var row2 = $('<div/>',{style:"padding-top: 5px; padding-left: 175px;"}).appendTo(container);
                    var row3 = $('<div/>',{style:"padding-top: 5px; padding-left: 102px;"}).appendTo(container);
                    var selectField = $('<select/>',{style:"width:120px; margin-left: 5px; text-align: center;"}).appendTo(row);
                    for (var d in operators) {
                        selectField.append($("<option></option>").val(operators[d].v).text(/^switch/.test(operators[d].t)?node._(operators[d].t):operators[d].t));
                    }
                    var valueField = $('<input/>',{class:"node-input-rule-value",type:"text",style:"margin-left: 5px;"}).appendTo(row).typedInput({default:'str',types:['msg','flow','global','str','num','jsonata',previousValueType]});
                    var btwnValueField = $('<input/>',{class:"node-input-rule-btwn-value",type:"text",style:"margin-left: 5px;"}).appendTo(row).typedInput({default:'num',types:['msg','flow','global','str','num','jsonata',previousValueType]});
                    var btwnAndLabel = $('<span/>',{class:"node-input-rule-btwn-label"}).text(" "+andLabel+" ").appendTo(row3);
                    var btwnValue2Field = $('<input/>',{class:"node-input-rule-btwn-value2",type:"text",style:"margin-left:2px;"}).appendTo(row3).typedInput({default:'num',types:['msg','flow','global','str','num','jsonata',previousValueType]});
                    var finalspan = $('<span/>',{style:"float: right;margin-top: 6px;"}).appendTo(row);
                    finalspan.append(' &#8594; <span class="node-input-rule-index">'+(i+1)+'</span> ');
                    var caseSensitive = $('<input/>',{id:"node-input-rule-case-"+i,class:"node-input-rule-case",type:"checkbox",style:"width:auto;vertical-align:top"}).appendTo(row2);
                    $('<label/>',{for:"node-input-rule-case-"+i,style:"margin-left: 3px;"}).text(caseLabel).appendTo(row2);
                    selectField.change(function() {
                        resizeRule(container);
                        var type = selectField.val();
                        if (type === "btwn") {
                            valueField.typedInput('hide');
                            btwnValueField.typedInput('show');
                        } else {
                            btwnValueField.typedInput('hide');
                            if (type === "true" || type === "false" || type === "null" || type === "nnull" || type === "else") {
                                valueField.typedInput('hide');
                            } else {
                                valueField.typedInput('show');
                            }
                        }
                        if (type === "regex") {
                            row2.show();
                            row3.hide();
                        } else if (type === "btwn") {
                            row2.hide();
                            row3.show();
                        } else {
                            row2.hide();
                            row3.hide();
                        }
                    });
                    selectField.val(rule.t);
                    if (rule.t == "btwn") {
                        btwnValueField.typedInput('value',rule.v);
                        btwnValueField.typedInput('type',rule.vt||'num');
                        btwnValue2Field.typedInput('value',rule.v2);
                        btwnValue2Field.typedInput('type',rule.v2t||'num');
                    } else if (typeof rule.v != "undefined") {
                        valueField.typedInput('value',rule.v);
                        valueField.typedInput('type',rule.vt||'str');
                    }
                    if (rule.case) {
                        caseSensitive.prop('checked',true);
                    } else {
                        caseSensitive.prop('checked',false);
                    }
                    selectField.change();

                    var currentOutputs = JSON.parse(outputCount.val()||"{}");
                    currentOutputs[opt.hasOwnProperty('i')?opt.i:opt._i] = i;
                    outputCount.val(JSON.stringify(currentOutputs));
                },
                removeItem: function(opt) {
                    var currentOutputs = JSON.parse(outputCount.val()||"{}");
                    if (opt.hasOwnProperty('i')) {
                        currentOutputs[opt.i] = -1;
                    } else {
                        delete currentOutputs[opt._i];
                    }
                    var rules = $("#node-input-rule-container").editableList('items');
                    rules.each(function(i) {
                        $(this).find(".node-input-rule-index").html(i+1);
                        var data = $(this).data('data');
                        currentOutputs[data.hasOwnProperty('i')?data.i:data._i] = i;
                    });
                    outputCount.val(JSON.stringify(currentOutputs));
                },
                resizeItem: resizeRule,
                sortItems: function(rules) {
                    var currentOutputs = JSON.parse(outputCount.val()||"{}");
                    var rules = $("#node-input-rule-container").editableList('items');
                    rules.each(function(i) {
                        $(this).find(".node-input-rule-index").html(i+1);
                        var data = $(this).data('data');
                        currentOutputs[data.hasOwnProperty('i')?data.i:data._i] = i;
                    });
                    outputCount.val(JSON.stringify(currentOutputs));
                },
                sortable: true,
                removable: true
            });

            for (var i=0;i<this.rules.length;i++) {
                var rule = this.rules[i];
                $("#node-input-rule-container").editableList('addItem',{r:rule,i:i});
            }
        },
        oneditsave: function() {
            var rules = $("#node-input-rule-container").editableList('items');
            var ruleset;
            var node = this;
            node.rules = [];
            rules.each(function(i) {
                var ruleData = $(this).data('data');
                var rule = $(this);
                var type = rule.find("select").val();
                var r = {t:type};
                if (!(type === "true" || type === "false" || type === "null" || type === "nnull" || type === "else")) {
                    if (type === "btwn") {
                        r.v = rule.find(".node-input-rule-btwn-value").typedInput('value');
                        r.vt = rule.find(".node-input-rule-btwn-value").typedInput('type');
                        r.v2 = rule.find(".node-input-rule-btwn-value2").typedInput('value');
                        r.v2t = rule.find(".node-input-rule-btwn-value2").typedInput('type');
                    } else {
                        r.v = rule.find(".node-input-rule-value").typedInput('value');
                        r.vt = rule.find(".node-input-rule-value").typedInput('type');
                    }
                    if (type === "regex") {
                        r.case = rule.find(".node-input-rule-case").prop("checked");
                    }
                }
                node.rules.push(r);
            });
            this.propertyType = $("#node-input-property").typedInput('type');
        },
        oneditresize: function(size) {
            var rows = $("#dialog-form>div:not(.node-input-rule-container-row)");
            var height = size.height;
            for (var i=0;i<rows.size();i++) {
                height -= $(rows[i]).outerHeight(true);
            }
            var editorRow = $("#dialog-form>div.node-input-rule-container-row");
            height -= (parseInt(editorRow.css("marginTop"))+parseInt(editorRow.css("marginBottom")));
            $("#node-input-rule-container").editableList('height',height);
        }
    });
})();
</script>
